Letter to Editor - Visual loss with papilloedema in Guillian-Barrei- Syndrome

I read with great interest the case report of Guillian-Barre syndrome; the patient also had papilloedema and vision loss.¹ In this report the authors have not mentioned about pupil and light reflex, which I think, was of great diagnostic importance in this patient. Suppose, if pupillary response to light was normal, it suggested a cortical type of vision loss making diagnosis of Guillian-Barre-syndrome very unlikely. In the presence of normal pupillary response porphyria presenting as malignant hypertension (papilloedema) and posterior leukoencephalopathy presenting as cortical blindness was a better likely possibility. In case pupillary abnormality was present along with impaired light reflex, it suggested optic nerve involvement and optic disk swelling was more likely to be because of papillitis rather than because of papilloedema.